AS26211 Proofpoint, Inc.
18.104.22.168/24 - PROOFPOINT-NET-NORTH-AMERICA
NetHandle: NET-208-84-64-0-1 OrgID: PROOF Parent: NET-208-0-0-0-0 NetName: PROOFPOINT-NET-NORTH-AMERICA NetRange: 22.214.171.124 - 126.96.36.199 NetType: assignment OriginAS: 13916, 22843, 26211 RegDate: 2007-11-05 Updated: 2017-06-15 NOCHandle: NETWO2061-ARIN AbuseHandle: NETWO2061-ARIN TechHandle: NETWO2061-ARIN Source: ARIN OrgID: PROOF OrgName: Proofpoint, Inc. CanAllocate: Street: 892 Ross Drive City: Sunnyvale State/Prov: CA Country: US PostalCode: 94089 RegDate: 2007-10-16 Updated: 2014-09-08 OrgAdminHandle: NETWO2061-ARIN OrgAbuseHandle: PAA19-ARIN OrgTechHandle: NETWO2061-ARIN Source: ARIN
IP Addresses in this range
IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.
Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.